Watch this video at CS First to learn how to build it: https://csfirst.withgoogle.com/c/cs-first/en/animate-a-name/overview.html Click on Remy the Dinosaur and she will say hi to you. If you press the spacebar she will change color, and if you click on the letters, THEY will change color. Cool right?
To do the color changing bit, go to events and get the block that says "when this sprite clicked" and put it on the blank rectangle, this is your coding area. Then, go to Looks and choose "change color effect by __ and attach the two blocks together. Last, click on the sprite and watch it change color! You don't have to make it change color ONLY when you click the sprite! You can scroll through the purple pieces and see what you like!